思ったより速度でない5.0TB DISK windows10で利用していますが、認識されない時もあります。（繋げ直せば認識するので固有問題と思います） ----------------------------------------------------------------------- CrystalDiskMark 5.1.2 ----------------------------------------------------------------------- * MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s] * KB = 1000 bytes, KiB = 1024 bytes Sequential Read (Q= 32,T= 1) : 88.863 MB/s Sequential Write (Q= 32,T= 1) : 93.374 MB/s Random Read 4KiB (Q= 32,T= 1) : 1.609 MB/s [ 392.8 IOPS] Random Write 4KiB (Q= 32,T= 1) : 1.802 MB/s [ 439.9 IOPS] Sequential Read (T= 1) : 219.998 MB/s Sequential Write (T= 1) : 79.691 MB/s Random Read 4KiB (Q= 1,T= 1) : 0.701 MB/s [ 171.1 IOPS] Random Write 4KiB (Q= 1,T= 1) : 1.745 MB/s [ 426.0 IOPS] Test : 1024 MiB [I: 16.8% (783.3/4657.4 GiB)] (x5) [Interval=5 sec] Date : 2016/06/28 11:58:29 OS : Windows 10 Professional [10.0 Build 10586] (x64) 参考になれば。